Firewall pinhole

Think of a firewall like a big fence around your house. It's meant to protect you from bad things outside, like strangers trying to come in and cause harm. But sometimes you need to let some good things in, like the mailman or your friends.

A pinhole in a firewall is a small opening that lets in the good things that you want, while still keeping the bad things out. Think of it like a little window in your fence where you can pass things through, like letters or packages.

This pinhole is controlled by the firewall, and it only lets things in that it knows are safe. So, if something bad tries to come through the pinhole, the firewall will stop it and keep it out of your house.

It's kind of like having a bouncer at a party. The bouncer lets in the people on the guest list, but stops anyone who isn't supposed to be there. The pinhole is like a special VIP entrance that only lets in the people with the right credentials.

In short, a firewall pinhole is a controlled opening in a firewall that only allows safe and authorized traffic in and out. It's like a security guard that only lets in the good guys.